如何检索PHP exec()错误响应? [英] How to retrieve PHP exec() error responses?

问题描述

下面是我尝试执行的命令，但没有成功:

Below is the command I tried executing, without success:

exec('ln -s ' . PLUGIN_DIR . '/.htaccess ' . ABSPATH . '/.htaccess');

在最后添加die()时，它会发现存在错误:

When you add a die() at the end, it catches that there's an error:

exec('ln -s ' . PLUGIN_DIR . '/.htaccess ' . ABSPATH . '/.htaccess') or die('what?!');

对于上面的exec()语句，权限问题导致了该错误，但是PHP没有显示它.您如何从PHP显示发生了什么错误?

For the above exec() statement, a permissions problem is causing the error, but PHP isn't displaying it. How do you display from PHP what error is occurring?

推荐答案

您可以收到 exec函数，通过传递一个可选的第二个参数:

You can receive the output result of the exec function by passing an optional second parameter:

exec('ln -s ' . PLUGIN_DIR . '/.htaccess ' . ABSPATH . '/.htaccess',$output);
var_dump($output);

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